Table 9-1 Print Engine Service Test Descriptions - Tektronix Phaser 550 Service Manual

9
Checks and Adjustments

Table 9-1 Print engine service test descriptions

Test
DRAM Group Test
IP Board Group Test
1c Font ROM Checksum
2e SmartCard Installed?
2f SmartCard
40 Engine Status
41 Front Panel Test
42 Engine Version
43 600 dpi test page
44 1200 dpi test page
45 Single paper path
46 Continuous Paper Path
47 Eng Ctrl Brd Health
48 Set Top Margin
49 Set Left Margin
4a Display Fuser Temp
4b ProcessUnit Count
4c 2nd Xfer Unit Count
4d FuserUnit Count
4e Copy Count
4f Sensor Group A
This test group automatically
enters the engine's
diagnostic mode (a lower level
mode). When you exit the test
group it asks you if you wish
to exit diagnostic mode. If you
wish to run more lower level
test, choose "no." If you
confirm "yes," you must wait
two minutes for the printer to
initialize before continuing
with other Service tests.
9-8 Phaser 550 Color Printer
Sub-test
Fuser Unit
Align. Roller
Fuser Exit
Paper Exit
StdTraySwitch 1
StdTraySwitch 2
StdTraySwitch 3
Opt1TraySwitch 1
Opt1TraySwitch 2
Opt1TraySwitch 3
Opt1TraySwitch 1
Opt1TraySwitch 2
Opt1TraySwitch 3
Description
Executes a series of test, numbering 30 thru 3D, on the image
processor RAM. A failure indicates a problem with the image
processor's RAM SIMMS or the on-board RAM.
Executes a series of tests, numbering 10 thru 25, on the image
processor board.
Performs a checksum calculation on the font ROM.
Verify that a network card is installed.
Performs a series of tests on the installed network card.
Displays the contents of 35 status registers. The contents are
encoded in hexadecimal. Refer to the later topic "Service
mode status code meanings" on page 9-11 for information on
decoding the meaning of each status buffer.
Series of front panel test. All LCD elements are turned on.
Press each button to see if the button action is detected.
Indicates the firmware version level of the print engine ROM.
Continuously prints a 600 dpi test page.
Continuously prints a 1200 dpi test page.
Processes a single sheet of paper through the paper path.
Continuously processes sheets of paper through the paper
path until stopped.
Tests the engine control board.
Allows you to change the height of the top margin. The default
setting is 30 (5 mm). 6 increments equal 1 mm
Allows you to change the width of the left margin. The default
setting is 30 5 mm. 6 increments equal 1 mm
Displays the temperature of the fuser in degrees Fahrenheit.
Normally it should read about 160
Indicates the number of sheets of media that have been
processed through the imaging unit. Reset the value to 0 by
pressing the Exit button.
Indicates the number of sheets of media that have been
processed by the pre-transfer charger. Reset the value to 0 by
pressing the Exit button.
Indicates the number of sheets of media that have been
processed through the fuser. Reset the value to 0 by pressing
the Exit button.
Indicates the number of prints successfully processed through
the printer. Reset the value to 0 by pressing the Exit button.
Indicates if the fuser is installed. Remove the fuser to see if the
sensor detects the change.
Indicates when the aligning roller sensor is actuated. Open the
left side door and insert a sheet of paper into the paper path to
actuate the sensor flag.
Indicates when the fuser exit sensor is actuated. Open the
right side door and manually actuate the flag.
Indicates when the paper exit sensor is actuated.
Indicates the state of the three tray sensor switches. Pull out
the tray and then open the left door to access and manually
push the switches. Switch one is the rear-most switch.
Indicates the state of the three tray sensor switches of the
upper tray in the optional feeder. Pull out the tray and then
open the left door to access and manually push the switches.
Switch 1 is the rear-most switch.
Indicates the state of the three tray sensor switches of the
lower tray in the optional feeder. Pull out the tray and then
open the left door to access and manually push the switches.
Switch one is the rear-most switch.
o
F.